CVE-2022-27924

critical-risk
Published 2022-04-21

Zimbra Collaboration (aka ZCS) 8.8.15 and 9.0 allows an unauthenticated attacker to inject arbitrary memcache commands into a targeted instance. These memcache commands becomes unescaped, causing an overwrite of arbitrary cached entries.

Do I need to act?

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91.2% chance of exploitation in next 30 days
EPSS score — higher than 9% of all CVEs
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CISA KEV: actively exploited in the wild
On the Known Exploited Vulnerabilities catalog — federal agencies must patch
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Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
7
CVSS 7.5/10 High
NETWORK / LOW complexity

Affected Products (20)

Affected Vendors

Synacor

References (7)

Vendor Advisory https://wiki.zimbra.com/wiki/Security_Center
Release Notes https://wiki.zimbra.com/wiki/Zimbra_Releases/9.0.0/P24
Vendor Advisory https://wiki.zimbra.com/wiki/Zimbra_Security_Advisories
Vendor Advisory https://wiki.zimbra.com/wiki/Security_Center
Release Notes https://wiki.zimbra.com/wiki/Zimbra_Releases/9.0.0/P24
Vendor Advisory https://wiki.zimbra.com/wiki/Zimbra_Security_Advisories
US Government Resource https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2022-...
79
/ 100
critical-risk
Severity 26/34 · High
Exploitability 27/34 · High
Exposure 26/34 · High